What is the cleaning performance of the bellows stop valve?
Release date:
2021-12-29
When using bellows globe valves or electric globe valves in horizontal pipelines, it is a new type of globe valve category that has advantages such as frictionless switching, sealing wear resistance, and opening and closing torque due to its own structure. This will reduce the specifications of the allocated actuators.
Bellows Globe Valve What is the cleaning performance like? Let's analyze it together below.
Bellows globe valves need to be used in horizontal channels. Bellows Globe Valve Electric globe valves are a new type of globe valve category, featuring advantages such as frictionless switching, sealed wear resistance, and opening/closing torque due to their own structure. This can reduce the specifications of the assigned actuator to some extent.
Bellows globe valves equipped with multi-turn electric actuators can regulate media and provide tight shut-off. They are widely used in petroleum, chemical, and urban water supply and drainage conditions with strict blockage requirements. It should be ensured that the bellows globe valve is installed at the angle specified by the manufacturer on the horizontal channel. Otherwise, during the operation of the process equipment, the diaphragm valve may have drainage issues and fail to completely discharge the medium inside the valve body.
However, diaphragm valve types, different manufacturers' production, Bellows Globe Valve and different nominal flow diaphragm valves have different installation inclinations, often causing significant problems in the design and manufacture of sterile process equipment. In T-type bellows globe valves, this drainage problem is more prominent.
Compared to bellows globe valves, bellows do not have this problem. Regardless of the valve body structure of the bellows globe valve, there are no "dead corners" during no-load operation of process equipment, so the channel can be firmly shut off. In addition, the piping system of sterile process equipment can be installed using various installation methods.
In the pharmaceutical manufacturing industry, sterile process equipment consists of many horizontal and vertical channels. Due to pipe positioning and technical reasons in pharmaceutical equipment design, this type of bellows globe valve needs to be installed at specific locations.
For example, if a bellows globe valve is installed on a vertical channel, a 90-degree elbow with the same inner diameter is required on the same horizontal plane. T-type diaphragm valves have high production costs, and their structure is more favorable for channel connection settings in terms of volume and shape compared to other diaphragm valves. Due to the different structural types of the two types of globe valves, the type of globe valve to be selected at each part should be determined during the initial design of sterile process equipment.
In the pharmaceutical, food, and biotechnology fields, many valves in export equipment require sterilization. Large valves are almost useless when sterilization is needed. Because in these process equipment, the quality of the media to be transported is decreasing, and with low flow rates, diaphragm valves are almost always chosen. The new bellows valve is small in size, can be used with pipe diameters, and has advantages over diaphragm valves.
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